Specifications

1-64
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 1 Alarm Troubleshooting
Note When you replace a card with an identical type of card, you do not need to make any changes
to the database.
1.3.92 PEER-NORESPONSE
• Major, Non-service affecting
The switch agent raises a Peer Card Not Responding alarm if either traffic card in a protection group
does not receive a response to the peer status request message. This is a software failure and occurs at
the task level, as opposed to a communication failure, which is a hardware failure between peer cards.
Procedure: Clear the PEER-NORESPONSE Alarm Reported on DS-N, OC-N or EC1 Card
Step 1 Right click on the card reporting the alarm.
Step 2 Click Reset Card and OK on the confirmation dialog.
Step 3 Wait for the card to reset.
Step 4 At reset, the green Act LED on the card will be replaced on the CTC by a white Ldg LED. When the
card finishes resetting, the green Act LED will reappear.
Step 5 Right click on the peer card of the card reporting the alarm.
Step 6 Click Reset Card and OK on the confirmation dialog.
1.3.93 PLM-P
• Critical, Service affecting
A Payload Label Mismatch Path indicates a Signal Label Mismatch Failure (SLMF). An invalid C2 byte
in the SONET path overhead causes an SLMF. The C2 byte is the signal label byte. This byte tells the
equipment what the SONET payload envelope contains and how it is constructed. It enables a SONET
device to transport multiple types of services.
The ONS 15454 encounters an SLMF when the payload, such as a DS-3 signal, does not match what the
signal label is reporting. An AIS alarm often accompanies the PLM-P alarm. If the PLM-P is the only
alarm reported with the AIS, clearing the PLM-P alarm clears the AIS alarm.
Warning Invisible laser radiation may be emitted from the aperture ports of the single-mode fiber optic
modules when no cable is connected. Avoid exposure and do not stare into open apertures.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15454.
Plug the wristband cable into the ESD jack located on the lower-right outside edge of the shelf
assembly.